Minute crystals of barium hexaferrite containing small amounts of Ti 4+ and Co 2+ ions have been prepared by the slow cooling method from a high-temperature solution of the Na 2 O–B 2 O 3 system. Magnetic properties (coercivity, saturation magnetization, remanence) and lattice parameters were measured as a function of Ti 4+ and Co 2+ concentration in the crystals. The site preferences for Ti 4+ and Co 2+ ions are also discussed.
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Watanabe et al. (1997) studied this question.
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